1 Technical Specifications
| General Information | |
| Product Model | H1Z2Z2-K (EN 50618) |
| Cross Section | 2 × 4 mm² (twin core, also available: 2×2.5 / 2×6 / 2×10 mm²) |
| Cable Structure | 2 × 4 mm² (twin core, flat design) |
| Standard | EN 50618:2014, IEC 62930 |
| Conductor (per core) | |
| Conductor Material | Tinned copper (anti-oxidation, corrosion-resistant) |
| Conductor Type | Class 5 flexible stranded (per IEC 60228 / EN 60228) |
| Conductor Structure (per core) | 56 strands × 0.285 mm |
| Max. DC Resistance at 20°C | ≤ 4.97 Ω/km |
| Insulation & Jacket | |
| Insulation Material | XLPO (Cross-linked Polyolefin) — Electron-beam cross-linked |
| Jacket Material | XLPO (Cross-linked Polyolefin) — LSZH, UV-resistant |
| Outer Dimensions (2×4mm²) | 6.1 × 12.3 mm (flat twin-core) |
| Jacket Colors | Black (standard) / Individual red + black cores |
| Halogen-Free | Yes — per IEC 60754-1 / -2 |
| Low Smoke | Yes — per IEC 61034 |
| Electrical Ratings | |
| Rated Voltage (AC) | U₀/U = 0.6/1.0 kV (600/1000V AC) |
| Rated Voltage (DC) | 1500V DC |
| Rated Current | 50 A |
| Test Voltage | 6.5 kV AC, 50 Hz, 10 minutes |
| Insulation Resistance | ≥ 800 MΩ·km at 20°C |
| Temperature & Environmental | |
| Operating Temperature Range | -40°C to +90°C (ambient) |
| Max. Conductor Temperature | +120°C (20,000 hours rated life) |
| Max. Short-Circuit Temperature | +250°C (max 5 seconds) |
| Minimum Bend Radius | 5× outer dimension (fixed) |
| UV Resistance | Per EN 50618 / HD 605 |
| Ozone Resistance | Per EN 50396 |
| Flame Performance | Non-propagation — IEC 60332-1 / EN 60332-1 |
| CPR Classification (EU) | Cca (per EN 50575) |
| Design Life | 25+ years (at 90°C continuous operation) |
| Packaging & Logistics | |
| Packaging | Wooden drum / coil / custom per request |
| Standard Length | 100m / 200m / 500m per roll (customizable) |
| MOQ | 500 meters (sample order negotiable) |
| Lead Time | 7-15 working days (stock: 3-5 days) |
2 Product Overview
The H1Z2Z2-K 4mm² twin core solar cable is a TUV Rheinland certified photovoltaic cable (EN 50618:2014) featuring a flat double-core design that integrates both DC positive and negative conductors in a single jacket. This eliminates the need for separate single-core cable runs, simplifying installation and reducing material costs.
Each core features a high-purity tinned copper conductor with Class 5 flexible stranding (56 strands × 0.285mm per IEC 60228), delivering a maximum DC resistance of just 4.97 Ω/km per core. The twin-core flat profile (6.1mm × 12.3mm) is space-efficient and ideal for routing in cable trays, conduit, and along module frames.
The double-layer XLPO (cross-linked polyolefin) insulation and jacket system is produced via electron-beam cross-linking, providing outstanding thermal stability (-40°C to +120°C conductor), UV resistance, ozone resistance, and mechanical durability over 25+ years. The LSZH jacket ensures low smoke and zero halogen emission in fire conditions. With a 50A current rating at 1500V DC, this cable is well-suited for high-power PV string combining and inverter connections.
Manufactured to rigorous quality standards under the management of SORIVO, each batch undergoes 6.5 kV AC dielectric testing and 10 kV AC spark testing. The cable is engineered for 25+ years of service life in utility-scale solar farms, commercial rooftops, BIPV, and energy storage systems. For detailed company information, please visit sorivocable.com/about-us/.
3 Key Features
TUV Rheinland Certified
Certified to EN 50618:2014 — accepted by European EPC contractors, installers, and utility-scale project developers.
Twin Core Flat Design
Integrates DC+ and DC- in a single flat jacket, reducing installation time by up to 50% compared to running two separate single-core cables.
50A High Current Rating
Rated at 50A continuous current per core at 1500V DC, suitable for high-power string combining and high-voltage PV system architectures.
Dual XLPO Insulation + Jacket
Electron-beam cross-linked XLPO provides proven thermal stability, UV tolerance, and mechanical toughness rated for 25+ years of outdoor exposure.
Halogen-Free, Low Smoke
LSZH construction limits toxic gas and smoke emission in fire scenarios — essential for rooftop, BIPV, and confined-space installations.
Wide Temperature Tolerance
Reliable operation from -40°C to +120°C conductor temperature, suitable for desert, alpine, tropical, and arctic climate zones.
Polarity Identification
Available with red/black individual cores for clear DC polarity identification, simplifying installation and maintenance.
Multiple Twin-Core Sizes
Available in 2×2.5mm² to 2×10mm² within the same H1Z2Z2-K series, enabling unified sourcing across different project scales.
4 Applications
This cable is designed for DC power transmission in photovoltaic installations, particularly where twin-core cabling simplifies installation: